Cysts are small sacs filled with fluid, air or skin cells that can pop up just about anywhere.

A Baker’s cyst is a fluid-filled lump that develops behind the knee, often linked to arthritis or cartilage tears. While some cause no discomfort, others can limit movement or even rupture.

Arachnoid cysts are the most common type of brain cyst. They're not tumors, but cysts filled with cerebrospinal fluid (a clear liquid that surrounds your brain and spinal cord). Most people who have ...

The 18-year-old Black-ish alum revealed she’s “feeling fine” after having surgery to remove a “large ovarian cyst” Vanessa Etienne is a Staff Writer for PEOPLE on the Health team. She joined the brand ...

Dipika Kakar's liver cancer treatment has been complicated by a cyst recurrence, leading to a second surgery and an emotional vlog detailing her journey ...

Actor Dipika Kakar was undergoing treatment for liver cancer and the reemergence of a 1.3 cm cyst near her liver has left her ...

Hand tumors or masses are common. The majority of hand tumors are benign, meaning they are not cancer. When malignant, or cancerous, most of these tumors are types of skin cancer. Cancers within ...